#include<stdio.h>
int main()
{
    int i=0;
    char a[]="cbm";
    char b[]="cpid",c[10];
    while(a[i]!='\0'&&b[i]!='\0')
    {
        if(a[i]>=b[i])c[i]=a[i]-32;
        else c[i]=b[i]-32;
        ++i;
    }
    c[i]='\0';
    puts(c);
    return 0;
}